CN1159648A - Control-beam with demountable bar for nuclear reactor - Google Patents
Control-beam with demountable bar for nuclear reactor Download PDFInfo
- Publication number
- CN1159648A CN1159648A CN96123190A CN96123190A CN1159648A CN 1159648 A CN1159648 A CN 1159648A CN 96123190 A CN96123190 A CN 96123190A CN 96123190 A CN96123190 A CN 96123190A CN 1159648 A CN1159648 A CN 1159648A
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- China
- Prior art keywords
- pin
- hub portion
- hole
- section
- pod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
- G21C7/117—Clusters of control rods; Spider construction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Vibration Dampers (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Manipulator (AREA)
Abstract
A control cluster has a spider constituted by a hub connectable to a drive shaft. Fins radiate from a bottom portion of the hub and provided with vertical fingers distributed in a regular array. It also includes rods provided with plugs that are releasably fixed to the fingers. The fins, their fingers, and at least the bottom portion of the hub constituting a single-piece part obtained by molding or by electro-machining.
Description
The present invention relates to the control bundle of nuclear reactor, each control bundle comprises a radiation shape frame, radiation shape frame constitutes by the hub portion that is equipped with the driving shaft fastener with from the fin of the bottom radiation of hub portion, and be provided with parallel vertical pin, and be provided with the rod that removable jew is fixed in the stopper of pin with the array distribution of rule.
This control bundle that uses comprises 16 fins at present.Each fin a pin at its end bearing.Also has an intermediate pin every a fin.Therefore, the control bundle has 24 absorbing rods.
Present radiation shape frame is the assembly of welding.Fin placed in position and soldering.For the positioning error of trying hard to avoid rod and when avoiding solid heat affecting to be out of shape, brazing operation is time-consuming and difficult.
In most of situations, pin is to engage by tenon and mortise respectively to be fixed on the fin.The end of each fin constitutes the tenon in the groove that is bonded on associated pin.Need carry out soldering behind this joint.When adopting such scheme, the vertical hole of passing pin can not be set, thereby excellent stopper must be fixed in the blind hole on the position below the fin height of pin.Therefore, this scheme does not make us very satisfied.French Patent (FRP) the 2nd, 599 described a kind of technical scheme in No. 884, might make rod become removable jew.This scheme is complicated, and rod assembly and radiation shape frame are for fixedlying connected.This ease of connection overslaugh rod is admitted the slip of controlling in the guide pipe of restrainting in the preparation of assembly.
The object of the present invention is to provide a kind of improved control bundle.For this purpose, according to an importance of the present invention, the invention provides a kind of control bundle, wherein, the bottom of fin and pin thereof and hub portion constitutes a single integral body, makes by mechanography or by electrosparking.
The top of hub portion can be linked as integral body with the bottom; That just requires to be processed into by galvanic corrosion.
In an advantageous embodiments, the hub portion top that is made of a single cylinder is by making and be bonded in the bottom by a single-piece separately, again by being threaded or being connected with the bottom by modes such as welding.
Said structure can significantly be simplified the structure and the assembling of shake device, the vibroshock operated by rotary motion in radiation shape frame so that reduce when control comes to fall for emergency cut-off impact to the tip end piece of admitting the fuel assembly that control restraints.Vibroshock generally comprises a pod that slides in hub portion, pod is pressed to the position of stretching out downwards from hub portion by a spring.The position that pod stretches out is limited by a bearing, and this bearing is to be made of a head that is axially disposed within the screw in the hub portion.This structure need be regulated this screw when beginning.In addition, screw the overslaugh liquid coolant is set along the flowing of hub portion, and because the damping late effect has prolonged the time that controller falls.
When sleeve is when being made of two parts, an inner sleeve can be set on the appropriate location of bottom, its constitutes a bearing that limits the pod extended position.
In addition, in the inner sleeve of the sleeve of support spring, a hole is set preferably, makes liquid coolant can flow through pod and sleeve, thereby reduce the damping late effect.
Another object of the present invention, no matter whether use aforementioned some configuration, all can realize, this purpose is that the degree of freedom that rod is had to a certain degree is a looseness, owing to mis-alignment takes place manufacturing tolerance, thereby when control is restrainted in the upper interior portion structure that rises up into reactor, make rod can be adapted to the exact position of guide pipe, guide pipe is used for rod is received in fuel assembly and/or the guide pin bushing.
For this reason, of the present inventionly provide a kind of control bundle, its stopper is at rod and be used for fixing between the device of pin and comprise an extension, and this extension has at least one tube reducing part, and it is flexible so that increase.
Because pin and individual construction fin can form through hole in pin, thus can realize unloading easily fixing, facilitate like this and change some rod.
Even also should be mentioned that at last for the radiation shape frame that does not possess said structure, for example for the sort of radiation shape frame of the theme that constitutes No. the 2nd, 599,884, aforementioned French Patent (FRP), the loosening property during mounting bar also is favourable.
By reading following detailed description to the specific embodiment of indefiniteness of the present invention, and by with the comparison of prior art scheme, can further understand above-mentioned feature with other of the present invention.Detailed description contrast the following drawings is carried out:
Fig. 1 is the view of partly cut-away of the control bundle of prior art;
Fig. 2 is the stereographic map of the control bundle radiation shape frame of prior art, and the expression pin is connected in the situation of fin;
Fig. 3 amplifies, and the view that partial vertical is cut open, expression rod are fixed on the situation on the pin of prior art;
Fig. 4 is the stereographic map according to the single-piece control bundle radiation shape frame of the first embodiment of the present invention;
Vertical cut-open view on the plane shown in Figure 5 is represented a kind of possible structure of the vibroshock in the sort of radiation shape frame shown in Figure 4;
Fig. 6 is similar to Fig. 5, but the expression another embodiment of the present invention, wherein radiation shape frame comprises two parts;
Fig. 7 is similar to Fig. 6, represents another kind of two-piece type radiation shape frame and a kind of possible structure that can be used for the vibroshock of two-piece type radiation shape frame;
Fig. 7 A, 7B and 7C are similar to Fig. 7, the expression variant embodiment;
Vertical cut-open view shown in Figure 8 is represented a kind of mounting means that makes rod have the rod of loosening characteristic;
Fig. 9 and 10 is similar to Fig. 8, the expression variant embodiment;
Figure 11 is the cut-open view along XI-XI line among Figure 10;
Figure 12 is similar to Fig. 8, represents another kind of modification;
Figure 12 A represents the modification of Figure 12;
Figure 13 is the general view that the expression rotating dog is decided a kind of possible distribution of bolt on radiation shape frame;
Figure 14 is the planimetric map of Figure 13.
Control bundle shown in Figure 1 comprises a radiation shape frame 10, and 24 rods 12 from it hang down.Can think that radiation shape frame has the radiant type installation from it of 14,16 fins of a hub portion, carry and selling 18 that the top stopper of absorbing rod 12 is fixed in the pin 18.Pin 18 stretches out very long from flaps down.
One countersunk 20 forms in hub portion 14, and has the groove that is used to admit a kind of device, and this device is used to connect the driving shaft that makes control bundle vertical deviation.In the bottom of hub portion, be provided with a hole that is used to admit vibroshock.Vibroshock comprises a pod 24 and a spring 25, and this spring is against an endoseptum that hole and countersunk are separated.Screw 26 be screwed into run through screw thread that endoseptum forms can adjusting position, this screw is used for fixing the riding position of pod 24, stretches out from hub portion at this position pod.After the adjusting, with screw be welded in countersunk 20 the bottom in case finger setting put.
Fin generally is fixed in the hub portion by soldering.In Fig. 2, pin 18 is fixed in fin by the soldering of tenon and mortise joint merga pass.End (or middle part of inner pin) constitutes the tenon in the groove that is bonded on pin, and the groove on the pin constitutes female tenon.
Among most of embodiment of the present invention, each pin is provided with threaded blind hole, is used for fixing the stopper 26 of rod 12.Because tenon and mortise engages, this blind hole does not extend through the root edge of fin.
Fig. 3 represents a kind of possible fixed form of rod in the threaded blind hole of pin 18.The extension of stopper ends at one section screw thread 29, and it is screwed into the threaded portion in hole.Between thread segment and stopper itself 46, be provided with the part that the diameter between two protuberances reduces.Pin or bolt 27 pin this connection.
Fig. 4 represents to constitute the structure of the radiation shape frame of first embodiment of the invention.Radiation shape frame is made single-piece, can be directly molded, also can make with the galvanic corrosion method.Molded for it is easy to, the edge of fin is made of flat part, and these flat parts are parallel to each other, and constitutes by the oblique interconnective step of flat part.The pin 18a of end highly precisely is equivalent to the height of fin 16 away from the part of hub portion axis.Intermediate pin 18b has identical height near the part of hub portion axis with fin.The hole that Fig. 4 does not draw and forms along pin axis, some are used for fixing the bullet shaped nut 28 of the stopper of rod but draw.
Radiation shape frame shown in Figure 4 can be installed vibroshock same as shown in Figure 1.
However, for the ease of making and assembling, preferably adopt configuration shown in Figure 5, wherein the part corresponding to Fig. 1 uses identical label.The riding position that pod 24 under spring 25 drives occupies by the end countersunk 33 that is installed in hole 22 against in and weld packing ring in place 30 and be fixed.Pod 24 has a shoulder, makes it can be resisted against the inside of packing ring 30 end faces.
In the embodiment shown in fig. 6, radiation shape frame is a two-piece type.It comprises that a formation top is the bottom of the sleeve 14a and a single-piece of hub portion, and this bottom comprises bottom and the fin 16 and the pin 18 of hub portion.
Sleeve 14a is machined to.The bottom that comprises bottom, fin and the pin of hub portion obtains by a molded single-piece, or connection that make by electro-erosion process, between top 14a and the bottom can realize by variety of way.As shown in Figure 6, process a cylindrical step on the top of bottom.Top 14a has a step complementary with it so that be bonded on the bottom.The effect of circular weld seam 42 is that the two parts with radiation shape frame are fixed together.The hole 22 that forms respectively on two parts has identical diameter to prevent the non-continuous event in hole.
In variant embodiment shown in Figure 7, the lower end at top is to be threaded with being connected of bottom.For this reason, the top system that is arranged in the hole of radiation shape frame bottom has been penetrated screw thread.Therefore two parts of radiation shape frame can be fixed together by screw-threaded engagement, up to the shoulder 44 on top till the top of fin.
Radiation shape shelf structure shown in Fig. 6 and 7 makes the assembling of penetrating damping need not in addition the fixedly part of pod 24, as long as in the lower end in the hole of bottom one lip limit 34 is set, the shoulder of shape on the pod 24 is bearing on the lip limit gets final product.Pod 24 and spring 25 be placed in position before sleeve is contained in the bottom of radiation shape frame (Fig. 7).
This shock-damping structure can be provided with a cooling fluid runner that passes radiation shape frame.Need not screw.Cooling fluid can flow along passage in the pod 36 and the center pit 38 that passes the collar of support spring 25.Thereby no longer need to regulate and the welding screw.
The key distinction of layout and Fig. 7 is shown in Fig. 7 A, is provided with to be used for the moving capel 45 of pin spline, so that being threaded bottom preventing and between the lower end at top unclamped.Capel 45 is against the shoulder at top and have at least one and be bonded on pin in the base channel.After screwing off the top, by the fixing capel of some solder joints 47.
Difference shown in variant embodiment shown in Fig. 7 B and Fig. 7 A is, capel 45 is replaced by a key 72, and groove 76, two parts that key 72 is arranged in the recess 74 at top and stretches into the bottom spin once more mutually, make recess 74 and groove 76 be positioned at another the place ahead mutually.The key that preferably has a half-cylindrical end slides in place as shown by arrows, then along its upper limb welding so that be fixed on the top.
In Fig. 7 C, the smooth hole of bottom has the bottom countersunk, is used to install nut 78, and this nut is spun on the thread head of the 14A of hub portion.After screwing off nut, can be fixed in point 80 places welding by the metal between two fins.
By the means described in No. the 2nd, 599,884, the aforementioned French Patent (FRP) rod can be fixed on Fig. 4,6 and 7-7c shown in radiation shape frame on.
However, preferably adopt one of configuration that describes below, it is flexible that this can make cluster have, and is beneficial in guide pipe plug-in package or inner guide pin bushing.
In situation shown in Figure 8, every rod 12 has a stopper 46, and stopper 46 is provided with an extension, the part 48 of the one or more little xsects of this extension tool, and it is connected with the part rounding of adjacent normal diameter avoiding and fractures.Can have nearly three is columniform little plane of structure part substantially.End, extension 50 can be fixed on the relevant pin by means described in the aforementioned French Patent (FRP).
In modification shown in Figure 9, stationary installation also comprises an extension of stopper 46.This extension has two than the small diameter portion 54 between the large-diameter portion branch, it is fixed in the extender 52, and extender 52 has two cylindrical bearing faces 56 in the small straight section both sides: the hole wall that has only the hole of opening wide that this carrying plane forms in the pin 18.Plane on the plane 57 admittance extenders 52 in the hole is in case the extender rotation.
The carrying plane 56 on top extends through the height of pin and guiding and is spun on nut 58 on the screw thread of extender end.When nut was tightened, it was pressed against a shoulder of extender 52 on the root edge of pin.
In case box nut is tightened fully, can be by art French Patent (FRP) the 2nd, 599 before making, the thin cover annular strain described in 884 and prevent to rotate.
In modification shown in Figure 10 and 11, the stopper 46 of rod is fixed on the pin 18 by an extension of structure.This extension has a thread head, and it is used for admitting the nut that is similar to Fig. 9.Pin or bolt 61 can prevent that stopper from rotating.In this extension, can form a groove 68.When bolt 61 is in place, it is engaged.This extension also can be provided with a little xsect part, and it is in the hole of pin and between two heavy in section parts 62 and 64.Heavy in section part 62 sliding fits on top are in Kong Zhongqi centering effect.The diameter of the heavy in section part 64 of bottom is slightly smaller than the diameter in hole, to limit the side direction activity of rod.
Be provided with an interior shoulder 66 at the Kong Zhongke that admits extension, with the carrying plane of the end face that constitutes a heavy in section part 62.
The key distinction embodiment illustrated in fig. 12 and embodiment illustrated in fig. 10 is that heavy in section part 62 is connected in small diameter portion by a frustoconical part 70, and this frustoconical part cooperates with hold-down bars in translation with the appropriate section in hole.In assembling or demolition, prevent the rotation of rod by the instrument (not shown).A part and/or heavy in section, one a group of bottom part that reduces xsect guarantees that also rod can the side direction activity.
The extension that variant embodiment is used to fuel rod to enter pin 18 shown in Figure 12 A provides accurate centering, and that tilts to cause when preventing from simultaneously to roll over, charge rod is stuck.Therefore, heavy in section part 62 has a very short barrel portion (being shorter than 1mm), is extended upward by a truncated cone shape abutment portion 70, and its drift angle is approximately 110 °, is extended by a frustoconical part 82 to next, incorporates swedged part into.
Figure 13 and 14 represents that pin used among Figure 10 embodiment decides a kind of possible distribution of bolt 60.This distribution is easy near all bolts 60 when making the folding dress.
Claims (10)
1. a nuclear reactor control is restrainted, and it comprises:
A radiation shape frame, it is made of a hub portion and fin, and described hub portion has and is used for the device that is connected with driving shaft, and described fin stretches out from the bottom radiation of a hub portion, and distribute and be provided with vertical pin with regular array at its radial outer end, and
Be provided with the rod that removable jew ground is fixed in the stopper of described pin,
Wherein, described fin, described pin constitute an integral single piece molded or that electrosparking becomes with the described bottom of described at least hub portion.
2. control bundle as claimed in claim 1 is characterized in that: the top of described hub portion and its bottom are made by electro-erosion process for whole and described radiation shape frame.
3. control bundle as claimed in claim 1 is characterized in that: the top of described hub portion is the cylindrical sleeve that the bottom with described integral single piece separates, and is bonded on the top of described bottom and fixes with it.
4. control bundle as claimed in claim 2 is characterized in that also comprising:
A vibroshock, it has can be in the hole of a described hub portion sliding pod and is forced to downwards makes the spring of pod from described hub portion extended position, and
By the stand apparatus that a packing ring constitutes, described packing ring is fixed in the hole of hub portion and limits described position.
5. control bundle as claimed in claim 3, it is characterized in that: also comprise a vibroshock, this vibroshock has a pod that can slide and quilt and is forced to downwards and makes the spring of pod from described hub portion extended position in the hole of described hub portion, the described position of pod is limited by a bearing, and this bearing is to be made of the lip limit that processes on the bottom of hub portion.
6. control bundle as claimed in claim 5 is characterized in that: described hole is upwards uncovered by the aperture apparatus that forms on pod, and upwards uncovered by the aperture apparatus of bearing that form and that constitute spring in an inner ring set of sleeve.
7. control bundle as claimed in claim 1, it is characterized in that: each described stopper is at relevant fuel barred body and be used for stopper is fixed between the device on the relevant described pin and comprise an extension that passes the hole of described pin, and described extension has that at least one is flexible to increase it than the part of minor diameter.
8. control bundle as claimed in claim 7, it is characterized in that: described part than minor diameter is used for cutting greatly on the top that pin is felt relieved and between part and heavy in section, the bottom part, the xsect of heavy in section, described bottom part is slightly little so that stay the lateral spacing of stopper in the hole of relevant pin at one.
9. control bundle as claimed in claim 8 is characterized in that: heavy in section, described top part is used for against a shoulder in the hole of relevant pin.
10. control bundle as claimed in claim 1, it is characterized in that: each described stopper is fixed in the extender, described extender passes relevant pin and has a part that is positioned at smaller cross-sectional area, this part is between heavy in section, the top part and heavy in section, bottom part of a described extender, heavy in section, the top part of extender is used for feeling relieved at pin, and heavy in section, bottom section diameter is less to stay sideshake.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9515488 | 1995-12-26 | ||
| FR9515488A FR2742912B1 (en) | 1995-12-26 | 1995-12-26 | CONTROL PANEL FOR NUCLEAR REACTOR, WITH REMOVABLE PENCILS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1159648A true CN1159648A (en) | 1997-09-17 |
Family
ID=9485954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96123190A Pending CN1159648A (en) | 1995-12-26 | 1996-12-26 | Control-beam with demountable bar for nuclear reactor |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5889832A (en) |
| EP (1) | EP0782150B1 (en) |
| JP (1) | JPH09189788A (en) |
| KR (1) | KR970051467A (en) |
| CN (1) | CN1159648A (en) |
| DE (1) | DE69604151T2 (en) |
| ES (1) | ES2137648T3 (en) |
| FR (1) | FR2742912B1 (en) |
| TW (1) | TW355236B (en) |
| ZA (1) | ZA9610627B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606205B (en) * | 2006-12-18 | 2012-10-31 | 阿海珐核能公司 | Fixed cluster with spider-shaped holder, related core of a pressurised-water nuclear reactor, and system including an assembly of nuclear fuel and such fixed cluster |
| CN105761765A (en) * | 2016-03-30 | 2016-07-13 | 中国核动力研究设计院 | Star-shaped buffering structure achieving reactor control rod buffering function and method thereof |
| CN113409965A (en) * | 2021-06-17 | 2021-09-17 | 中国核动力研究设计院 | Integrated control rod assembly star frame and control rod assembly |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030205226A1 (en) * | 2002-05-02 | 2003-11-06 | Pre Holding, Inc. | Aerosol medication inhalation system |
| US8483346B2 (en) * | 2007-04-16 | 2013-07-09 | Westinghouse Electric Company Llc | Nuclear reactor control rod spider assembly |
| US9336910B2 (en) | 2010-10-07 | 2016-05-10 | Bwxt Nuclear Energy, Inc. | Control rod/control rod drive mechanism couplings |
| CN102693763B (en) * | 2011-03-21 | 2014-07-23 | 江苏核电有限公司 | Control rod comprehensive test method |
| US9153349B2 (en) | 2012-03-12 | 2015-10-06 | Areva Inc. | Method for recycling nuclear control rods and recycled control rod section |
| US10102933B2 (en) * | 2012-04-13 | 2018-10-16 | Bwxt Mpower, Inc. | Control rod assembly impact limiter |
| US9053824B2 (en) * | 2012-06-07 | 2015-06-09 | Westinghouse Electric Company Llc | Nuclear control rod with flexure joint |
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| US2994655A (en) * | 1957-10-04 | 1961-08-01 | Martin Co | Deceleration controller |
| GB1066014A (en) * | 1963-12-02 | 1967-04-19 | Atomic Energy Authority Uk | Improvements in or relating actuators for nuclear reactor control |
| US3481832A (en) * | 1967-04-14 | 1969-12-02 | Combustion Eng | Nuclear reactor core and control element arrangement |
| US3448006A (en) * | 1967-06-07 | 1969-06-03 | Gulf General Atomic Inc | Control rod drive system |
| US3595748A (en) * | 1968-01-24 | 1971-07-27 | Westinghouse Electric Corp | Nuclear reactor control device |
| US3816245A (en) * | 1972-06-27 | 1974-06-11 | Combustion Eng | Emergency core coolant system utilizing an inactive plenum |
| US4035230A (en) * | 1973-02-20 | 1977-07-12 | Combustion Engineering, Inc. | Shock buffer for nuclear control assembly |
| US4019954A (en) * | 1974-11-07 | 1977-04-26 | Commissariat A L'energie Atomique | Safety device for a nuclear reactor and especially a fast reactor |
| US4073684A (en) * | 1976-09-27 | 1978-02-14 | Combustion Engineering, Inc. | Releasable extension shaft coupling |
| JPS59137887A (en) * | 1983-01-13 | 1984-08-08 | ウエスチングハウス エレクトリツク コ−ポレ−シヨン | Nuclear fuel assembly |
| EP0159509B1 (en) * | 1984-03-30 | 1989-01-04 | Westinghouse Electric Corporation | An improved control rod spider assembly for a nuclear reactor fuel assembly |
| DE3564507D1 (en) * | 1984-03-30 | 1988-09-22 | Westinghouse Electric Corp | Control rod spider assembly for a nuclear reactor fuel assembly |
| FR2576705B1 (en) * | 1985-01-28 | 1990-06-08 | Framatome Sa | DEVICE FOR COUPLING A CONTROL BAR AND A DRIVE MECHANISM |
| GB2179195B (en) * | 1985-08-08 | 1989-01-18 | Westinghouse Electric Corp | Nuclear reactor control rod support |
| FR2599884B1 (en) * | 1986-06-10 | 1988-10-07 | Fragema Framatome & Cogema | ADJUSTMENT GRAPPLE WITH REMOVABLE PENCILS FOR NUCLEAR FUEL ASSEMBLY |
| FR2602903B1 (en) * | 1986-08-13 | 1988-12-02 | Framatome Sa | ABSORBENT BAR WITH INTEGRATED DAMPING DEVICE |
| JP2592084B2 (en) * | 1988-02-05 | 1997-03-19 | 三菱重工業株式会社 | Data processor in toll collection system |
| US4855100A (en) * | 1988-03-02 | 1989-08-08 | Westinghouse Electric Corp. | Reconstitutable control rod spider assembly |
| FR2633435B1 (en) * | 1988-06-28 | 1990-11-09 | Framatome Sa | ADJUSTABLE PENCIL ADJUSTING CLUSTER FOR NUCLEAR FUEL ASSEMBLY |
| US5141711A (en) * | 1988-08-17 | 1992-08-25 | Westinghouse Electric Corp. | Reconstitutable control assembly having removable control rods with detachable split upper end plugs |
| FR2637410B1 (en) * | 1988-10-04 | 1990-11-02 | Framatome Sa | DEVICE FOR CENTERING AND FIXING A CLAMP OF A CLUSTER GUIDE ON A CORE PLATE OF A NUCLEAR REACTOR |
-
1995
- 1995-12-26 FR FR9515488A patent/FR2742912B1/en not_active Expired - Fee Related
-
1996
- 1996-12-18 ZA ZA9610627A patent/ZA9610627B/en unknown
- 1996-12-23 DE DE69604151T patent/DE69604151T2/en not_active Expired - Fee Related
- 1996-12-23 ES ES96402868T patent/ES2137648T3/en not_active Expired - Lifetime
- 1996-12-23 EP EP96402868A patent/EP0782150B1/en not_active Expired - Lifetime
- 1996-12-24 KR KR1019960071324A patent/KR970051467A/en not_active Application Discontinuation
- 1996-12-26 CN CN96123190A patent/CN1159648A/en active Pending
- 1996-12-26 JP JP8348968A patent/JPH09189788A/en not_active Withdrawn
- 1996-12-26 US US08/774,015 patent/US5889832A/en not_active Expired - Fee Related
- 1996-12-30 TW TW085116290A patent/TW355236B/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606205B (en) * | 2006-12-18 | 2012-10-31 | 阿海珐核能公司 | Fixed cluster with spider-shaped holder, related core of a pressurised-water nuclear reactor, and system including an assembly of nuclear fuel and such fixed cluster |
| CN105761765A (en) * | 2016-03-30 | 2016-07-13 | 中国核动力研究设计院 | Star-shaped buffering structure achieving reactor control rod buffering function and method thereof |
| CN113409965A (en) * | 2021-06-17 | 2021-09-17 | 中国核动力研究设计院 | Integrated control rod assembly star frame and control rod assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| US5889832A (en) | 1999-03-30 |
| JPH09189788A (en) | 1997-07-22 |
| FR2742912B1 (en) | 1998-03-06 |
| TW355236B (en) | 1999-04-01 |
| EP0782150B1 (en) | 1999-09-08 |
| ZA9610627B (en) | 1998-07-10 |
| KR970051467A (en) | 1997-07-29 |
| EP0782150A1 (en) | 1997-07-02 |
| DE69604151T2 (en) | 2000-05-25 |
| DE69604151D1 (en) | 1999-10-14 |
| ES2137648T3 (en) | 1999-12-16 |
| FR2742912A1 (en) | 1997-06-27 |
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